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    • 2. 发明申请
    • METHOD FOR PREPARING AMINO-TRIAZOLINONE
    • 制备氨基三唑啉酮的方法
    • WO2013015654A3
    • 2013-06-13
    • PCT/KR2012006031
    • 2012-07-27
    • KS LAB CO LTDKIM KEUN SIKCHOI YEON TAK
    • KIM KEUN SIKCHOI YEON TAK
    • C07D249/14A01N43/653C07D249/12
    • C07D249/12
    • The present invention relates to a method for preparing an amino-triazolinone which can be used as a raw material for amicarbazone and has chemical formula (I). The method for preparing the amino-triazolinone comprises the steps of: reacting an acyl hydrazide of chemical formula (II) with a carbamating agent of chemical formula (III) or (IV) so as to obtain a hydrazine carboxylic acid of chemical formula (V); and reacting the thus-obtained hydrazine carboxylic acid of chemical formula (V) with a hydrazine hydrate under the presence of a base catalyst. According to the present invention, the amino-triazolinone may be stably prepared without using safety equipment or safety facilities for a possible leakage of phosgene, which has been used as a conventional reactant. Thus, manufacturing costs for amicarbazone, which is used as an herbicide for farm products such as sugar cane, corn, or the like, can be reduced so as to achieve improved price competitiveness, and further to achieve improved cost competitiveness compared to other herbicides.
    • 本发明涉及一种制备氨基三唑啉酮的方法,该氨基三唑啉酮可以用作氨基脲的原料并且具有化学式(I)。 制备氨基三唑啉酮的方法包括以下步骤:使化学式(II)的酰基肼与化学式(III)或(IV)的氨基甲酸化剂反应,以获得化学式(V)的肼羧酸 ); 并在碱催化剂存在下将由此获得的化学式(V)的肼羧酸与肼水合物反应。 根据本发明,可以稳定地制备氨基三唑啉酮而不使用已经用作常规反应物的可能泄漏光气的安全设备或安全设施。 因此,可以减少用作甘蔗,玉米等农产品除草剂的氨力农碱的制造成本,从而实现提高的价格竞争力,并且与其他除草剂相比,成本竞争力进一步提高。